Electric switch.



R's. 865,588. iATENTED SEPT. 18, 1987 E. M. HEWLET'. & T, E. BUTTON.

ELSGTETfi SWITCH. unmums HEB!) no? 1a. 1902.

sums-mm 1.

L E m M d .mw E d y TheodoreEBistton (ULtnesses.

F1 CB5.

PATENTED SEPT. 19, 390?.

AIWLIEAH9H PILBD 150V. 19, 1903.

5 SHEETS-BHEET 2.

Figi

inventors. Edward M.l-iewi-ett V Theodore EBucion. M W v M Witnesses.

7 f ittg.

PATENTED SEPT. 10 190?.

B. M. HEWLETT in 1". E. BUTTON.

LEfiTRIG'SWiTGI-I.

W.Buttcm bLi mtg 7 PATENTED SEPT. 10, 1'?. v E M. HEWLETT 62 T. E. BUTTON.

ELECTRIC SWITCH .wnmnzon runs 110v 19.1902.

HSHEETQ-BHEET 5.

Fig; 6.

Inventors.

.n .IU W8 in r 60 d ms m T Witnesses.

'mtg.

UNITED STATES PAT EN T OFFICE.

EDWARD M. HEWLETT AND THEODORE E. BITTTUN, Ul SUHENEUIA DY All YORK, ASSIGN- ORS TO GENERAL ELECTRIC COMPANY, A bUltIUltA'llUN Ul NEW Ylllih.

ELECTRIC SWITCH.

Specificatinn of Letters Patent.

Fatented Sept. 10, 1907.

Application filed November 19, 1902 Serial No. 131,964.

lie it known that WU. EDWARD M. HEWLETT and TSXEUHORl-l l). liu'r'i'un, citincns of thc United Status, R siding at Schenectady, cuunty ui P-t-ht-nvctati ia Slate nl New York heivv invuntml wrtaiin nuw and useful Imin :x specification.

This 'invvntiun rolatvs to switches for handling large (zinc-triccuri'unts, thimain uhjett of tin iinpruvemvnts living in provide am rgnnimthin which will respond i iul'tivvly to a cuntrul dt-vimhunted at a pnint dista from the pnint of installation of the swim-hing mnmhnr.

thwr iuziturcs of tho invention tu'v inipruvnti inggicopt-rating nn-chanism fur giving an ifitfliiifitfd lavarzign to act the switch nnzl an imprnvvlnvnt in the dutch he tween tho mutni or puwm' (h-vicc? which governs the switch and the lath-r by which reliable operation may be assured.

The (-untrnl sy 19in voniprises esst ntially s. three-wire circuit and n switch at tlw control point by which pntemlisl may be thrown cm (110 armature: nf thc wil from ithvr the pnsilivv innegative main. tin livid hving cnntimwurily uxvi! c4 i.

' in it mmpnumi tngglc cmnprising two mgglus lwtwr-vn thrbridging "i'fiizu'h and thc pmversirivnn incmiiwr art ing t agcthvr so as to muitiply tiiipuvwrv 'lhvsn 10ggh-s 3TH mpumtlrtl by it shaft between which and the worm Wheel ilriwn by the mutm' is a. yaw} g m-11ml hynsnup acliun by which thc two parts may he mnnurtt-(l and rlisconncctml at any dwirvcl points 0i angular travmsv if the shaft, aflinginstuntly. when thcdutcrmincd traversv has been niadv, tn throw off thu 111mm and wrmit it to run iron,

Th n invention also (samplings in addition to the dis- Lnnt mntrui n linml-npuruletl ilvvice by which the switch may alsn heupmated in (-nsvs of (-incrgvncy.

The various iczttul'cs 01' nnvelty will be hvrcinafttr more fully dtscriiwd and dofiniti-ly llldii'iliid in thv ciaims.

in thy mcmupnnying drawings which illnstnnt tininventiun, Fignrv l is a silhrluvation iii an t-lcciricnlly- Qptmted switch mnhnrlying nur impiiivl mnnts shew;- ing the switch closed Fig 1" is a likv view showing tho switch ripen; Fig. 2 is :m (-nd vhw'atinn; Figs. 3, 3" 4 and 5 are details of the, clutching (ls-viva; and Fig. 6 is 2. din gram of the cnnti'ul circuits.

The particular type of switch shown in the mwings is designed for unth-rgruuml use, as in a man-helm ah though many ieatun-s of the invention are applicahlv to all type-sot switches. V

Refeiring first t0 Figs. 1 and 2, 1-1 represent a suppurting immv, and 2 n switchlmnrli npun which arr: lnnuntul the cuntn t studs 3 1% for i'ill' switch cun tacts. 4 is a bridging mntnct and 5 a shunt vuntnct width may he lippml with iiil'ifllil at its :ngaging mull Thev switch is shown dnuhlc-pulu, 1hr; svvcml parts just rvcitcrl living tin-nature QIIlPlu}'(:l in duplicatv, an sm-n at 4 4" in Pig. 2, such 21 design iwing pnrtieulm'lyapplicable for n dnuhlc-pole switch. l$--fi" rl-prcscnt an: chutvs thrnugh which our: cm? (if the cunt-acts 'muvcs win-n the circuit is npcnvd, and in which n suiiahlu :irr? extinguishing arrangement may he pruvidcd as thy sired. On tho luwcr 0nd ui tlnsnppmt 2 mi tho l'i'nntul ihc board. 2111' pivntcd arms 1-5 in tin uppcr (Tillof which is jnurnnlv l tin: cai'rivr 2'? for the bridging con tug-ti Between Lhu (extremities is journah'tl a link 91110 other end nf which is pivoted to a link 10 pivntully unnnuctml nith a crank ll koyutl tn the shaft 12. The pivnt 13 is cumnmn to the links 9 and 10 and to a. crmnp- 7O ing h'amc l4 thv fixed (and nf which isjoumaled onn rigid block 01' support 15 muuntod on the board 2 The organization th us far described comprises a compound toggle (-nnsisting of two systms at right angina to each other uni: formed by the crank 11 and the link '1'5 l0 and the nthur by the link 9, arm 7 and cramping fnunv 1 2; and the two act tugcthur in irnnipnuml the power and give a particularly powerful ievorage an the bridging t-untac-t. This is cspcci-tiliy advantageous in the of heavy switches, whcru grcat power is nvcussary to set the bridging contact. iutu firm engagement with its lilncks, and is also particularly advantageous in connuctinn with motor-set swim-hes, since it permits of the use of a smallupuniting mutur. The toggles are shown in Fig. l in set position, tho switch being closed. 01: opening, thv (mink ll moves anguiarly with the shaft 12, thus luwvring the outur cnd ct -the cramping ,frame H and collapsing the tnggln immediately adjacent to the bridging contact, the hitter rocking. outwardly iii-Q plane'pcrpen iicular tn the Bwituhbonrtl and producing a wide break. In rgsetting thtswitch the crank 11 is raised to a vertical pnsition and when in that pnsition is instantly released from thc motor the imminent the center 0i its wrishpin alines with the centur of the shaft 12 and th pivot 13 at the outer end of the cramping frame 14. i

It is partivularly d t'simble in the case of a motor set switch that this rvlcase shall be instantaneous, so that the acquired momentum hi the motor armature shall not require sudden checking and shall not tend to throw the parts beyond the required range of movemerit. This result is previded for by our improved fdrm of clutch. This clutch is mounted within a he!- lnw worm wheel 16 meshing with a worm 17 driven b ing arms 22*22", whiehis keyed to tho shatft l2.

tor of the slmt'l and the pivot pin 22".

eonnoeted with one end of it spring 25, the other end of whieh is pivoted lit'lNtOll the fixed arms 22 and 22'. This spring is shifted ott' t-enlier with tespet'l to the eonln Fig. 3 it is shown in one position of rest, in Fig. I?" in a transitional position :llltl in Fig. 4 in the opposite position. The arm 225 entries n stud 2ti projeeling through a slot in it link 27 jonrn:tled on one'end ot' the pawl 2() 2U".

Thus if the arm 23 he shifted hnek and forth on the shalt t2, the spring 25 will gradually tipproneh n position where ils sl rain is on the line of the centers 22', 12. utter lltl 'rilllg hieh the arm 23 will he snapped quiekl to its extreme position. When in the position shown in Fig. 3 this shifts the pawl outwardly and muses the end to whit-h the link 27 is t-onnet-ted to intercept one of the lugs lll It)" on the worm wheel, and when shifted to the other position llll' t-lltl 2\)" is shifted outwnrdly to inlereept these logs, its intiit'ittt-d in Fig. 4. Thi is done til it dt-linite position of the ports by means ol' lttj or stops 2% 28", 2!) (see Fig. 27 fastened fit't'ltftl t' on lixed part of the t'rnmeworlc, one pair of these rl'vllrt n!)- proximutt-ly |8tJ klpill'i. living at the same ltltlltll distantro from the eentt-r ol' lllt' shalt l2 as the In;' Q-t, nnd the other set, also npproxinnltely l8tl npurt, being at :t shorter radial distant-tlo t-ofipernte with it lng lttl on the puwl-t'iirryiog lrnnie whit'h is seeul'ed to the lntlt. lhus when the motor is shifted the ,worm \\'lltll rnns [roe until one ol the lugs l!) or it)", according to the direetion in whieh the motor rotates, engages |l|- purl.

Assuming that the wheel is driven elotkwise lll Fig. 3, in the position of the pawl therein shown. n hen the log I!) engages the pnwl, the motor will he t'lntt-hed to the shalt tlllfl ll shill the latter through an approximate zinglqI-Qfrtttit)". ut the end of whieh range of motion tht llli; :24 will ttlnlt against one of the lugs 2!) there lieini; two of those diitmetrieally opposite. the ltttl' ornnot. heing visihle in the drawings. Wlllt'll hitter will detain it, drawing downwardly on the end of the pool and pulling it out of engngwmt-nl with llll' ling l!| thereby diseonni-t-ting the motor. At tln stunlime the log 30 on the erank shaft is hrought just over t-t-oter and in ("lose relation to a stop 28 limiting the motion of the operating parts of the switt'h. 'lhe tliseonnew lion oi the pawl lrotn the worm wheel is insluntuneo s; the motor then runs free and m expend its momentum without disturbing the switt-h pints l1\ en it the operator-should hy eurt-lessnt-ss permit the hWillll ut. the eontrol station to remain set longer than nevossttry, it eonld have no daunnging intltienee on the operation ol the switeh. when the lug 24 engaged the tixed stop .the ttllll 125i was shifted far enough to lhrow the spring 25 ove! the line nl lllt' eenlers. tiller \\lli('ll it. mipped =qt|lt3l lv hook and set the end 20 ot' the pawl i posh [ion to engage one of the lugs I!) or it)" upon it I'('\\'t-t movem nt tl llieworln whet-l, so tlntl when it ltttllllt" nee ssur to op ti the swilvh. n. r vl-r zii i the under names would set in a similar manner to that already de- Herihed in trlutehing the motor to the switch parts.

three views of the clutch are shown, Figs 3, 3 and 4; Fig. 3 showing it in position maintaining engagetnt-nt lll'lWU 'lt the (t'tillk shaft, and the worm wheel tor a eIot-kwise motion, Fig 4 for an anti-clockwise motion, while Fig. 3 shows a position where the lug 24 lots just engaged the lixed stop, and the pin 26 has been thrown to die bottom of the slot in link 27, and is just in the tlt'l of pulling away the pawl 20 from the stop it); it moment later the stop 19 will have been eleared when the spring 25 will flip the pawl t0 the position ol Fig. l. The shaft driven by the worm wheel is then lrw front tltlt'kWiHt rotation and the switeh parts are invested hy th fixed stop 28, the motor running free until the opernlor at the distant control switch opens tho .swio-h, tiller which the motor will continue to run until its inertia is expended in overcoming the friction o! th pin-ts. While it is thus running free the rightlntnd end of the ('lutt'h pawl drags over the inner wall ol tln worm wheel and slips by the lugs 19 19. Thus the pin-ts are, when they come 'to test, in a position it h re the right-hand end of pawl 20" bears against the iron-r p riphery of the worm wheel. Consequently when the operuior throws the control switch to release the t-onlrolled swileh the worm-wheel catthes on the righehtind end of pnwl 20 and drives the trunk-shaft in no ttnti-t'loekwise tliret'tion, thereby shifting the toggle away from the stop and permitting the switch it] open.

"lhe eontro-l eirt-uitsnreindiented in Fig. ti. As will be seen from the diagram. the motor 18 has its tield winding eonnt-etod permanently aeross twool the mains of EL three-wire lighting tirenit. The ttrninlure has one ln-nsh tonnet-lt-d with the neutral, wire, and the other with the pivot of a two-way switt'h St. the two eontiters of \\'lllt'll eonneet rospeetively with the outside wires. plus and minus. as intlit-nted in the diagram. ltyturn wires 31: 32 are eonnt-eled in t'irt-uit between the 'p'n'ot ot the t-onlrol swileh and the outside mains of the system, in series with Wllit'll are \tIlllllBit'lS 35 3-4" Wllil'll illtlit'ztlt the potential of .the mains. 'lhe hir s .ill I13 ttlllll 't'llllg respettiwly with the neenliw nod positive mains of the tl|rt-e-\vire system no pioi'id tl with ronlzu't studs for lhe hutuheontrol soittlt il. and suitable indit'zllions provided to show that wh n the switch is in one posilion the distantt-oittrol switeh is oil. and when in the other it is on.

lwl its ussnine that the operator at the t'ontrol point, Wltltll may he in the t'tllllitl stallion. desires to set the mun-holesnitt'h. The operating t-onlrol lover .ll i,- shil'led to the position marked (in therehy closing the (in-nit to the nmtor from the positivh main through the nrnntture to the neutral main, its will he evident iron: the diagram. The held of the motor being t-on- Iinnonsly in tll't'tllt. the motor starts up in a diret-tion toset the switeh. The worm wheel l6is driven soy in at t-lovkwise diret-t ion. musing an engagement ol one of the logs on the interior of its periphery with th pawl 11!]. its seen in Fig. 3. ll makes no tlitlol'ente :tl what point the motor httfi stopped in the plior ('tnittul operw (ion. ine ol' the lugs will he lit-ought into engagement with lln pntvl nntl will he put into t-lutt-h with the slutll I! told \till shill. il. tlnot-gl on it! loi approxillt , driving the shaft, since the lugs 19 n) simply slip by the edge of the pawl. During this range of motion, th crank II on the shaft l2 has been raised to a vertical position or just a little beyond a vertical position, to overset the toggle llll l, and after the clutch with the motor is released the parts are brought to rest by ongagement of the log on the arm 21 of the clutch with the fixed stop 28 for holding the switch set. in shifting the crank 11 the link 10 is raised, thereby lifting the cramping f ame 14 and simultaneously shilting in toward the switch terminals the bridging contact 4. The outer end of the Link 9 is also raised, thereby bringing into action the toggle 7-9-14, of which it forms a part. Thus. we have the two toggles acting to (20!!! pound or niultiply the power of the motor, the leverage due to the toggle li)l1 being multiplied into that due to the toggle 79l4. After the clutch has opened, the motor runs until the switch at the control station is opened, after which it may expend its momentum and will come to a position of rest, the particular point at. which it comes to rest heingof no significance. Thus there is no necessity for care on the part of the operator as to the time during which he shall hold the control switch closed, simply throwing it for a. short interval and then opening it, the parts at the operated switch taking care of the rest.

In opening the switch the operator throws the control switch .ll to the position marked Off, thereby putting the motor into connection with the negative main and reversing its direction of rotation. This will shift the worm gear in a direetionanti-clockwise (see Fig. 4), bringing one of the lugs 19-19 into engagement with the opposite end 20 of the clutching pawl, as indicated, the pawl having been left, as previonsly described, in a position to insure this result. The crank shaft 12 is then carried back over its previo ns path a'distance of approximately 180 during which. the lug 24 encounters the stop, when the pawl is agztin disconnected with a snap action by the spring 25 living shifted off-center.

It is sometimes desirable to control the switch at the point where it is installed. To admit of this we have provided a hand-operating lever 34 provided with a hole 35 on the handle end by which a. pole may he hooked to the handle when inserted into the man-hole. The opposite end of the lever is provided with a gear sector, as indicated in 5' l, in mesh with a pinion :ill on the crank shaft 12. i, ring 37 connects the lIiLH l operating lever with a fixed part ol the switch. 'lhus in operating by hand it is unnecessary to disturb the motor, the lever 34 being Lifted and directly acting on, the crank shalt. As a call for hand operation ol the .switch will he one that l'I-F'lllll'cs ope-ping of tho switch to permit oxzuoination oi the parlo, tin: parts are positioned as shown in Fig, 1, so that thc gear sector is raised with relation to the pinion.

What we claim as new and desire to secure by Letters Patent of the United States, is,-

L A l] l-lcclrlc swltch comprising: at movable Contact. n swinging arm carrying the same, a main luggle, one link or llll'll is plvoted to Sfllll arm mu] the other to n fixcll poinl of the zen-Itch frame, and an auxiliary toggle for cramping; the mnln toggle with its two links parallel and side by side.

13. All elccu'le switch provided with n movable contact mounted on a lever swinging lo and from :1 fixed contact, n cramming fromc, :1 link lmvlng one end pivoted to the lover illKl the other end pivotcd to the outer end of the crruuping frame, said link forming n loggle with said frame, and on nuxllinry toggle for raising nml lmvcrinu; finrrnmphu: frame.

ll, The combination of an elec ic switch. an operating motor. a com wheel, and n revel'sihie pawl for clutching llnygcnr whccl for llilli'l'lliilllil! rumonf movement in cil ln'r direction. t

4. ill n motor-oywratml switch, the comoinution with n rcve-rsllile motor, of n gear wheel, a clutch-. mwl, mill a means for selling the [lllWl ffll reverse chit-thing nfler r! ch-lvrmlnnte mnge of opcrntlon.

7,. The comllllmllon of'n reversible motor, a shaft, n (lUlllrllflA'l adapted to connect the two, means for m lensing the clutch-pawl utter a cloths-minute angular movcmom of the shaft, and means for etting the pawl when rch. sell to clutch the shaft on a reversal of the motor.

6, The combination of a reversible motor, :1 shaft, n pirotell clutchqmwl having an engaging toe at either cod, and nienns for disconnecting one toe of the pawl after a dorm-minute range of shaft movement, thereby shifting the other toe into position for engagement fill :1 reverse movement of the motor.

7. 'lhecomlrlnntlon of u reversible motor, a shaft, a snap clutch, a pawl operated therchy to connect the motor and shaft, and means for snapping the clutch t release the motor and reverse the pawl after :1 determinate range of shaft muvclmeni.

K. The combination of a l'QVL'll-illllv motor, a shaft, a siinp clutclr pivoted com-enlrlcnlly with one of them, .11 plVUlZ0i| 'il&Wl lmvirn: two engaging luvs, slop to pull the pawl out of clutching position nllcl' n determinatiangle of shaft movement. and means for reversing ils position (luring such operation to set the clutch for a. reverse motor movement. K

J. The comlllnntion of a! reversible minor, 1: elmfi. n chm-h provided with n rover-shale pawl for connccling them for eltllcr direction of driving. n pivoted l'lntch part, connections between Ilia plvulml clutch puri aim! the pawl l'or o mmttm.; it, and :1 slop Io shill the pivoted port mul reverse the pawl. V

Ill. The combination or n reversible nlolor. wheel Ill, ivoted reversible pawl 20, plvotcd 0pc ling lever 23, and :v. fixed stop for .s'llll'llug lhc lover after a alt-lermlnnte moon or nmu r mun-mom.

ll. 'llut, )llllllll1!ll()ll of a reversible motor, when] lll, pit-mm; rcvcl'sllulc pawl '.:I| Slnll'tjl link 2?. pivoted lover spring, as 25, I'm snapping it out of xii-lion, and a lixcd stop for shifting the lever nllcr n llvtcrrninzlte range of molar movement.

12. The cmnhimllion with :l lllulUf-uill'l'illl! swlh-h, of n clutch ln lwccn llw motor and switch mechanism locking illi'lll for n vlvlinilc direction 11f drive, dlslnm control de- 130 vii-cs lor llumol lr, and a hand-operating low-r for 01)(li1l in; llll .\'\\ll|'ll ludcpcmlr-niiy of the rumor.

lit. 'llncomhiunliml willl all vlc lri swll li. of an elm-- lrir- Inulnl' for nrivl'nllng thiszmw, s: rl motor having a -mly a-xcimd Hill, :1 control vim-nil. :lml :1 control .\t\lll'll for ('Ullllllllll}; tho :rrnmlul'c between llu: neutral and l'lllfll out-tide wire of n Llirv re sysl m, for the purpose sci forth sold nrlmelmhaving one lil'llhll pcrmu nonlly Humor-led lo shit] ncnlrnl.

H. In an, nlcclrlc switch operator] In an ctr-civic motor, tlrn cmnlllnnllun, with loads for supplying curl-col lmllm motor, of ti control switch for controlling; the rllrcclloli of iOO New I'ulrliiuil in ilnnmlur. and n plurality of inlik'ating LL \iww iillii lflliilililii ill a different land in pnrallrl with llw runirul mvitril iinii ill MI'ivefi wiih the uwima IS. in n lnnlur iili'iiiili) electric switvi romprislng a mntur having a purrminruliy excited iield and an nl'mulul'v supplivl \vilii vnrronl I'lum a three wire system, one Iii-mil of will nrnmin lr inning permanently connected in lln' nvuiml wirm limx'ulnhinution with a control switch fur (liliiili iii); iinolhvr brush 0! iin armature 1:0 either nulsiiir \rirr, ui lwu indicating devivos curl] vonneclL-(l to Hill of (inuulsidv wires and lu Siiiii nihm' iv-wlv in purnllri with said control switch. whereby when Raid ('ouirol switch closes the circuit from either outside wire through the motor the corresponding indicating device is short ell-culled.

in witness whereof we have hereunto set our handle this 18th day of November, 1902v EDWARD M. HEW'TIETT. THEODORE'E. BUTTON. Witnesses BENJA N B. HULL. limb (human 

